Computer Science ›› 2017, Vol. 44 ›› Issue (Z6): 258-262.doi: 10.11896/j.issn.1002-137X.2017.6A.059

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Energy-efficient Design under Imperfect Condition Based on Spectrum Prediction

ZHANG Yang, ZHAO Hang-sheng and ZHAO Xiao-long   

  • Online:2017-12-01 Published:2018-12-01

Abstract: In cognitive radio networks,when the secondary users do spectrum predicting and spectrum sensing,some spectrum prediction mistakes and spectrum sensing mistakes are included.In cognitive radio networks where energy is limited,the secondary users’ energy efficience is analyzed under spectrum prediction mistakes and spectrum sensing mistakes in this paper.A normalized spectrum prediction formula is designed.The impacts of spectrum prediction energy,the probability of wrong prediction,traffic intensity and channel number on the energy efficient are also investigated respectively in this paper.The simulation results are compared with perfect cognitive radio networks energy efficience.The simulation results are more conform to actual condition and have great value in theory and engineering application.

Key words: Cognitive radio,Spectrum prediction,Spectrum efficient

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